EP2876964A1 - Procédé d'accès, équipement et station de base - Google Patents

Procédé d'accès, équipement et station de base Download PDF

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Publication number
EP2876964A1
EP2876964A1 EP12883320.9A EP12883320A EP2876964A1 EP 2876964 A1 EP2876964 A1 EP 2876964A1 EP 12883320 A EP12883320 A EP 12883320A EP 2876964 A1 EP2876964 A1 EP 2876964A1
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EP
European Patent Office
Prior art keywords
channel resource
user equipment
synchronous channel
base station
access
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12883320.9A
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German (de)
English (en)
Other versions
EP2876964B1 (fr
EP2876964A4 (fr
Inventor
Wei Quan
Jian Zhang
Yi Jiang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
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Publication of EP2876964A1 publication Critical patent/EP2876964A1/fr
Publication of EP2876964A4 publication Critical patent/EP2876964A4/fr
Application granted granted Critical
Publication of EP2876964B1 publication Critical patent/EP2876964B1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to the field of communication technology field, and more particularly to an accessing method, equipment and base station.
  • air interface transmission has time delay.
  • a user equipment User Equipment, UE
  • the UE needs to obtain a timing advance (Timing Advance, TA) value before accessing to a cell to transmit uplink data, so that when performing uplink transmission at the cell, the user equipment always sends the uplink signals ahead of the TA to enable the uplink data to arrive at the base station at an appointed time.
  • TA Timing Advance
  • the base station uses a TA command to inform the user equipment to change the TA value.
  • a change value of the TA is carried in the TA command, for enabling the user equipment to correct the TA after receiving the change value of the TA. Meanwhile, the user equipment will set a timing alignment timer (Timing Alignment Timer, TAT) for maintaining whether the TA value is available. In the case of TAT overtime, the user equipment considers that the TA value may be unreliable, and then the user equipment considers that uplink is unreliable and needs to acquire the TA value again.
  • TAT Timing Alignment Timer
  • the user equipment obtains uplink synchronization, namely, obtains the above-mentioned TA value, through a random access procedure (Random Access Procedure).
  • the random access procedure is divided into two types, random access based on competition and random access based on non-competition.
  • a physical random access channel Physical Random Access Channel, PRACH
  • Guard Time Guard Time
  • Embodiments of the present invention provide an access method, a user equipment and a base station, for solving waste phenomenon of an access resource in a random access procedure in the prior art, reducing the occupation of a UE on the access resource during access and improving the utilization efficiency of the access resource.
  • the embodiments of the present invention provide an access method, including: obtaining, by a user equipment, a first synchronous channel resource; using the first synchronous channel resource to send an access request to a base station, for requesting to access the base station; receiving access feedback sent by the base station, and determining whether access is successful according to the access feedback.
  • the obtaining a first synchronous channel resource includes: receiving the first synchronous channel resource sent by the base station, wherein the first synchronous channel resource is a synchronous channel resource allocated by the base station to the user equipment; or receiving a synchronous channel resource set sent by the base station, and selecting the first synchronous channel resource from the synchronous channel resource set, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the access feedback sent by the base station is received, the access is determined to be successful.
  • the method before the receiving the first synchronous channel resource sent by the base station, the method further includes: receiving a synchronous channel resource set sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the method when receiving the synchronous channel resource set sent by the base station, and selecting the first synchronous channel resource from the synchronous channel resource set, the method further includes: sending an uplink message to the base station according to the access feedback; receiving a competition solution message sent by the base station aiming at the uplink message; determining that the access is successful when the competition solution message belongs to a competition solution message of the user equipment.
  • the determining that the access is successful under the condition that the competition solution message belongs to a competition solution message of the user equipment includes: determining that the competition solution message belongs to the competition solution message of the user equipment and determining that the access is successful, when the competition solution message comprises an identifier of the user equipment.
  • the receiving a synchronous channel resource set sent by the base station includes: receiving index information of at least one synchronous channel resource included in the synchronous channel resource set sent by the base station.
  • the using the first synchronous channel resource to send an access request to a base station specifically includes: using the first synchronous channel resource to send the access request to the base station, when uplink data is sending; or using the first synchronous channel resource to send the access request to the base station, when triggering access notification sent by the base station is received.
  • the access feedback is access feedback masked by the base station by using information of sending time and frequency of the access request, or access feedback masked by the base station by using an identifier of wireless side allocated by the base station to the user equipment.
  • the method before sending the access request to the base station, the method further comprises:receiving a timing advance value sent by the base station, for performing uplink transmission according to the timing advance value; or obtaining a timing advance rule and system information, and determining a timing advance value according to the timing advance rule and the system information, for performing uplink transmission according to the timing advance value, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the system information includes at least one of the following items: position information of a user equipment, position information of a base station, signal strength received by a user equipment, signal quality, path-loss, and received downlink signals of at least two base stations.
  • the method further includes: u setting a time alarm of a timing alignment timer to be infinite, when receiving or determining the timing advance value and accessing successfully; performing uplink transmission according to the timing advance value.
  • the method further includes: performing the timing alignment timer, when receiving or determining the timing advance value and accessing successfully; receiving or determining the timing advance value again, when the timing of the timing alignment timer reaches the time alarm and the timing advance value is not received or determined again.
  • the thirteenth possible implementation manner when timing or counting reaches a preset threshold and an access feedback sent by the base station is not received, repeatedly implementing a process of the obtaining an first synchronous channel resource and a process of using the first synchronous channel resource to send an access request to the base station, or repeatedly implementing a process of using the first synchronous channel resource to send the access request to the base station, until the access feedback is received or sending times of the access request reach a preset maximum number.
  • the method further includes: when timing or counting reaches the preset threshold and a competition solution message sent by the base station aiming at the uplink message is not received,repeatedly implementing a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implementing the process of using the first synchronous channel resource to send the access request to the base station, until access is determined to be successful or sending times of the access request reach the preset maximum number.
  • the synchronous channel resource includes a scheduling request resource.
  • the embodiments of the present invention provide an access method, including: receiving an access request sent by a user equipment by using a first synchronous channel resource; and sending access feedback to the user equipment, for enabling the user equipment to determine whether access is successful according to the access feedback.
  • the method before the receiving an access request sent by a user equipment by using a first synchronous channel resource, the method further includes: allocating the first synchronous channel resource to the user equipment, and sending the first synchronous channel resource to the user equipment; or sending a synchronous channel resource set to the user equipment, for enabling the user equipment to select the first synchronous channel resource from the synchronous channel resource set, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the method before the sending a first synchronous channel resource to the user equipment, the method further includes: sending the synchronous channel resource set to the user equipment, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sending a synchronous channel resource set to the user equipment specifically includes: sending the synchronous channel resource set to the user equipment according to system load.
  • the sending a synchronous channel resource set to the user equipment includes: sending index information of at least one synchronous channel resource included in the synchronous channel resource set to the user equipment.
  • the method when a the synchronous channel resource set is sent to the user equipment, the method further includes: receiving an uplink message sent by the user equipment according to the access feedback; sending a competition solution message to the user equipment aiming at the uplink message, for enabling the user equipment to determine whether the access is successful according to the competition solution message.
  • the method further includes: sending triggering access notification to the user equipment, before receiving the access request sent by the user equipment by using the first synchronous channel resource.
  • the sending access feedback to the user equipment specifically includes: masking the access feedback by using the time and frequency information of the access request sent by the user equipment, and sending the access feedback to the user equipment; or masking the access feedback by using a wireless side identifier allocated by a base station to the user equipment, and sending the access feedback to the user equipment.
  • the method further includes: sending a timing advance value to the user equipment, for enabling the user equipment to perform uplink transmission according to the timing advance value; or sending a timing advance rule to the user equipment, for enabling the user equipment to determine the timing advance value according to the timing advance rule and system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the system information includes at least one of the following items: position information of a user equipment, position information of a base station, signal strength received by a user equipment, signal quality, path-loss, and received downlink signals of at least two base stations.
  • the method further includes: sending a time alarm of a timing alignment timer to the user equipment.
  • the synchronous channel resource includes a scheduling request resource.
  • the embodiments of the present invention provide user equipment, including: a control unit, configured to obtain a first synchronous channel resource; a sending unit, configured to use the first synchronous channel resource to send an access request to a base station; and a receiving unit, configured to receive access feedback sent by the base station.
  • the receiving unit is further configured to receive the first synchronous channel resource sent by the base station, wherein the first synchronous channel resource is a synchronous channel resource allocated by the base station to the user equipment, and the control unit is specifically configured to determine the first synchronous channel resource received by the receiving unit as the first synchronous channel resource; or the receiving unit is further configured to receive a synchronous channel resource set sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource, and the control unit is specifically configured to select the first synchronous channel resource from the synchronous channel resource set received by the receiving unit.
  • the receiving unit is further configured to receive a synchronous channel resource set sent by the base station, before receiving the first synchronous channel resource sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • control unit is configured to determine that access is successful, when the receiving unit receives the first synchronous channel resource sent by the base station and the receiving unit receives the access feedback sent by the base station.
  • the sending unit when the control unit selects the first synchronous channel resource from the synchronous channel resource set, the sending unit is further configured to send an uplink message to the base station according to the access feedback; the receiving unit is further configured to receive a competition solution message sent by the base station aiming at the uplink message; and the control unit is further configured to determine that the access is successful when the competition solution message belongs to a competition solution message of the user equipment.
  • the receiving unit is further configured to receive triggering access notification sent by the base station; the sending unit is further configured to use the first synchronous channel resource to send the access request to the base station, when uplink data is sent or the receiving unit receives the triggering access notification sent by the base station.
  • the receiving unit before the sending unit sends the access request to the base station, the receiving unit is further configured to receive a timing advance value sent by the base station; or the control unit is further configured to obtain a timing advance rule and system information and determine the timing advance value according to the timing advance rule and the system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the control unit when the receiving unit receives the timing advance value or the control unit determines the timing advance value and the control unit determines that the access is successful, the control unit is further configured to set the time alarm of a timing alignment timer to be infinite.
  • the control unit when the receiving unit receives the timing advance value or the control unit determines the timing advance value and the control unit determines that the access is successful, the control unit is further configured to control to operate the timing alignment timer, and control to implement a process of receiving or determining the timing advance value again, when timing of the timing alignment timer reaches the time alarm and the timing advance value is not received or determined again.
  • the user equipment further includes a timer or a counter, configured to begin to time or count when the sending unit sends the access request to the base station;
  • the control unit is further configured to control to repeatedly implement a process of the obtaining a first synchronous channel resource and a process of using the first synchronous channel resource to send an access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send an access request to the base station, until the receiving unit receives the access feedback or the sending times of the access request reach a preset maximum number,when timing of the timer or counting of the counter reaches a preset threshold and the receiving unit does not receive an access feedback sent by the base station.
  • the user equipment further includes:
  • the embodiments of the present invention provide a base station, including: a receiving unit, configured to receive an access request sent by a user equipment by using a first synchronous channel resource; and a sending unit, configured to send access feedback to the user equipment, for enabling the user equipment to determine whether access is successful according to the access feedback.
  • the sending unit is further configured to send the first synchronous channel resource to the user equipment, wherein the first synchronous channel resource is a synchronous channel resource allocated by the base station to the user equipment; or the sending unit is further configured to send a synchronous channel resource set to the user equipment, for enabling the user equipment to select the first synchronous channel resource from the synchronous channel resource set, and use the first synchronous channel resource to send an access request, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sending unit is further configured to send a synchronous channel resource set to the user equipment before sending the first synchronous channel resource to the user equipment, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sending unit is specifically configured to send the synchronous channel resource set to the user equipment according to system load.
  • the sending unit when the sending unit sends a synchronous channel resource set to the user equipment, the receiving unit is further configured to receive an uplink message sent by the user equipment according to the access feedback; the sending unit is further configured to send a competition solution message to the user equipment aiming at the uplink message, for enabling the user equipment to determine whether the access is successful according to the competition solution message.
  • the sending unit is further configured to send triggering access notification to the user equipment.
  • the sending unit is further configured to mask the access feedback by using time and frequency information of the access request sent by the user equipment or mask the access feedback by using a wireless side identifier allocated by the base station to the user equipment, when the access feedback is sent to the user equipment.
  • the sending unit is further configured to send a timing advance value to the user equipment, for enabling the user equipment to perform uplink transmission according to the timing advance value; or the sending unit is further configured to send a timing advance rule to the user equipment, for enabling the user equipment to determine the timing advance value according to the timing advance rule and system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the sending unit is further configured to send a time alarm of a timing alignment timer to the user equipment.
  • the embodiments of the present invention provide a user equipment, including: a processor, configured to obtain a first synchronous channel resource; a sender, configured to use the first synchronous channel resource to send an access request to a base station; and a receiver, configured to receive access feedback sent by the base station.
  • the receiver is further configured to receive the first synchronous channel resource sent by the base station, wherein the first synchronous channel resource is a synchronous channel resource allocated by the base station to the user equipment, and the processor is specifically configured to determine the first synchronous channel resource received by the receiver as the first synchronous channel resource; or the receiver is further configured to receive a synchronous channel resource set sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource, and the processor is specifically configured to select the first synchronous channel resource from the synchronous channel resource set received by the receiver.
  • the receiver is further configured to receive a first synchronous channel resource set sent by the base station, before receiving the first synchronous channel resource sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the processor is configured to determine that the access is successful, when the receiver receives the first synchronous channel resource sent by the base station and the receiver receives the access feedback sent by the base station.
  • the sender when the processor selects the first synchronous channel resource from the synchronous channel resource set, the sender is further configured to send an uplink message to the base station according to the access feedback; the receiver is further configured to receive a competition solution message sent by the base station aiming at the uplink message; the processor is further configured to determine that access is successful when the competition solution message belongs to a competition solution message of the user equipment.
  • the sender is further configured to use the first synchronous channel resource to send an access request to the base station, when uplink data is sending or the receiver receives triggering access notification sent by the base station.
  • the receiver before the sender sends the access request to the base station, the receiver is further configured to receive a timing advance value sent by the base station; or the processor is further configured to obtain a timing advance rule and system information, and determine a timing advance value according to the timing advance rule and the system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the processor is further configured to set a time alarm of a timing alignment timer to be infinite, when the receiver receives the timing advance value or the processor determines the timing advance value and the control unit determines that the access is successful.
  • the processor is further configured to begin to time when the receiver receives the timing advance value or the processor determines the timing advance value and the processor determines that access is successful, and control to implement a process of receiving or determining the timing advance value again when timing reaches a time alarm and a timing advance value is not received or determined again.
  • the processor is further configured to begin to time or count when the sender sends the access request to the base station; the processor is further configured to control to repeatedly implement a process of the obtaining a first synchronous channel resource and a process of using the first synchronous channel resource to send an access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send an access request to the base station, until the receiver receives the access feedback or the sending times of the access request reach a preset maximum number, when timing or counting of the processor reaches a preset threshold and the receiver does not receive an access feedback sent by the base station.
  • the processor is further configured to begin to time or count when the sender sends the uplink message to the base station; the processor is further configured to control to repeatedly implement a process of the obtaining a first synchronous channel resource and a process of using the first synchronous channel resource to send an access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send an access request to the base station, until the processor determines that access is successful or the sending times of the access request reach the preset maximum number, when the timing or counting of the processor reaches a preset threshold and the receiver does not receive a competition solution message sent by the base station aiming at the uplink message.
  • the embodiments of the present invention provide a base station, including: a receiver, configured to receive an access request sent by a user equipment by using a first synchronous channel resource; and a sender, configured to send access feedback to the user equipment, for enabling the user equipment to determine whether access is successful according to the access feedback.
  • the sender is further configured to send the first synchronous channel resource to the user equipment, wherein the first synchronous channel resource is a synchronous channel resource allocated by the base station to the user equipment; or the sender is further configured to send a synchronous channel resource set to the user equipment, for enabling the user equipment to select the first synchronous channel resource from the synchronous channel resource set, and use the first synchronous channel resource to send an access request, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sender is further configured to send a synchronous channel resource set to the user equipment before sending the first synchronous channel resource to the user equipment, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sender is specifically configured to send the synchronous channel resource set to the user equipment according to system load.
  • the receiver when the sender sends a synchronous channel resource set to the user equipment, the receiver is further configured to receive an uplink message sent by the user equipment according to the access feedback; and the sender is further configured to send a competition solution message to the user equipment aiming at the uplink message, for enabling the user equipment to determine whether the access is successful according to the competition solution message.
  • the sender is further configured to send triggering access notification to the user equipment.
  • the sender is further configured to mask the access feedback by using time and frequency information of the access request sent by the user equipment or mask the access feedback by using a wireless side identifier allocated by the base station to the user equipment, when the access feedback is sent to the user equipment.
  • the sender is further configured to send a timing advance value to the user equipment, for enabling the user equipment to perform uplink transmission according to the timing advance value; or the sender is further configured to send a timing advance rule to the user equipment, for enabling the user equipment to determine the timing advance value according to the timing advance rule and system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the sender is further configured to send a time alarm to the user equipment.
  • the user equipment when the user equipment implements access, the user equipment uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • Universal Mobile Telecommunication System Universal Mobile Telecommunication System, UMTS
  • WLAN Wireless Local Area Network
  • WLAN wireless Local Area Network
  • WiFi Wireless Fidelity
  • WiMAX worldwide interoperability for microwave access
  • User equipment may also be called a mobile terminal (Mobile Terminal, MT), mobile user equipment and the like, may communicate with one or multiple core networks through a radio access network (e.g., Radio Access Network, RAN), the user equipment may be a mobile terminal, for example, a mobile telephone (or called a "cellular" telephone) and a computer having a mobile terminal, for example, may be a portable, pocket, hand-held, computer inbuilt or vehicle-mounted mobile device.
  • a radio access network e.g., Radio Access Network, RAN
  • RAN Radio Access Network
  • the user equipment may be a mobile terminal, for example, a mobile telephone (or called a "cellular" telephone) and a computer having a mobile terminal, for example, may be a portable, pocket, hand-held, computer inbuilt or vehicle-mounted mobile device.
  • RAN Radio Access Network
  • a base station may be a base transceiver station (Base Transceiver Station, BTS) in GSM or CDMA, may also be a base station (NodeB) in WCDMA, may also be an eNB or an e-NodeB in LTE and is not limited in the present invention.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB eNodeB in LTE
  • Fig. 1 is a schematic diagram of a flow of an access method of an embodiment of the present invention.
  • the method as shown in Fig. 1 is implemented by a user equipment.
  • the method includes:
  • the user equipment when the user equipment implements access, the user equipment uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • the obtaining the first synchronous channel resource specifically includes: the user equipment may receive a synchronous channel resource set sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the user equipment may select a first synchronous channel resource from the synchronous channel resource set, and the access method under this condition is an access method based on competition.
  • the user equipment may also receive the first synchronous channel resource sent by the base station, and the first synchronous channel resource may belong to the synchronous channel resource set sent by the base station and may also be a new synchronous channel resource not belonging to the synchronous channel resource set.
  • the access method under this condition is an access method based on non-competition.
  • step 104 the user equipment determines that the access is successful when the access feedback sent by the base station is received; under the condition of access based on competition, in step 104, after receiving the access feedback sent by the base station, the user equipment sends an uplink message to the base station according to the access feedback, receives a competition solution message sent by the base station aiming at the uplink message, and determines that the access is successful when the competition solution message belongs to a competition solution message of the user equipment.
  • the user equipment when the user equipment implements access, uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 2 is a schematic diagram of a flow of an access method of an embodiment of the present invention.
  • the method as shown in Fig. 2 is implemented by a base station.
  • the method includes:
  • the base station may also send a synchronous channel resource set to the user equipment, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the user equipment may select a first synchronous channel resource from the synchronous channel resource set, and the access method under this condition is an access method based on competition.
  • the base station may also send the first synchronous channel resource to the user equipment, and the first synchronous channel resource may belong to the synchronous channel resource set and may also be a new synchronous channel resource not belonging to the synchronous channel resource set.
  • step 202 under a condition of access based on non-competition, after step 202 is implemented, if the user equipment receives the access feedback, the access is successful; under a condition of access based on competition, after step 202 is implemented, an uplink message sent by the user equipment according to the access feedback is received continually, a competition solution message is sent to the user equipment aiming at the uplink message, and if the user equipment receives the competition solution message belonging to the user equipment, the access is successful.
  • the user equipment when the user equipment implements access, uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 3 is a schematic diagram of a flow of an access method of an embodiment of the present invention.
  • the method as shown in Fig. 3 may be used in the methods as shown in Fig. 2 and Fig. 1 .
  • the method as shown in Fig. 3 is an access method based on competition, including:
  • Step 301 a user equipment receives a synchronous channel resource set sent by a base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the base station may send the synchronous channel resource set to the user equipment according to system load. For example, under a condition of large system load, the base station may decrease the number of the synchronous channel resources in the synchronous channel resource set; under a condition of small system load, the base station may increase the number of the synchronous channel resources in the synchronous channel resource set.
  • the base station may dynamically adjust the number of the synchronous channel resources in the synchronous channel resource set according to the system load, and the number of the synchronous channel resources in the synchronous channel resource set may be larger than the number of the random access codes.
  • the present method may reduce conflict and time delay caused by small number of random access codes.
  • the synchronous channel resource includes at least one of the following items: a time domain resource of the synchronous channel, a frequency domain resource of the synchronous channel, and a code resource of the synchronous channel.
  • the base station may send the synchronous channel resource to the user equipment, and may also send index information of at least one synchronous channel resource included in the synchronous channel resource set.
  • the synchronous channel resource may be a scheduling request resource, or other synchronous resources.
  • the user equipment may obtain uplink synchronization by obtaining a TA value under the condition of asynchronous uplink.
  • step 302 or steps 303 to 305 may be implemented.
  • step 302 or steps 303 to 305 may be implemented prior to step 301 and may also be simultaneously implemented with step 301.
  • Step 302 the user equipment may receive the TA value sent by the base station.
  • Step 303 the user equipment obtains a TA rule.
  • the TA rule is used for indicating a threshold of system information and a TA value corresponding to the threshold.
  • the user equipment may obtain the TA rule preset in the user equipment, and may also receive the TA rule sent by the base station.
  • Step 304 the user equipment obtains the system information.
  • the system information includes at least one of the following items: position information of the user equipment, position information of the base station, strength of a signal received by the user equipment, signal quality, path-loss, and downlink signals received by the user equipment from at least two base stations.
  • Step 305 the user equipment determines the TA value according to the TA rule and the system information.
  • the user equipment may obtain position information of the user equipment, and determine the TA value according to the position of the user equipment and a threshold in the TA rule corresponding to the position; the user equipment may obtain strength of a receiving signal, and determine the TA value according to the strength of the receiving signal and a threshold in the TA rule corresponding to the strength of the receiving signal; the user equipment may measure signal quality, and determine the TA value according to the signal quality and a threshold in the TA rule corresponding to the signal quality; the user equipment may measure path-loss to a serving base station, and determine the TA value according to the path-loss and a threshold in the TA rule corresponding to the path-loss; the user equipment may receive position information of at least one base station sent by the serving base station, for example, the position information may be longitude and latitude information, the user equipment calculates distance with the base station according to the position information of the base station and the position information of the user equipment, and determines the TA value in combination with signal propagation speed and a threshold in the position; the
  • At least two base stations are combined to help to optimize or correct the TA value determined by the user equipment, for example, the user equipment measures first downlink path-loss to a first base station and second downlink path-loss to a second base station, wherein the first base station and the second base station are base stations adjacent to the serving base station of the user equipment, and the user equipment determines the TA value according to a threshold in the TA rule corresponding to the first downlink path-loss and the second downlink path-loss.
  • Step 306 the user equipment selects the first synchronous channel resource from the synchronous channel resource set.
  • the user equipment may randomly select the first synchronous channel resource and may also select the first synchronous channel resource according to particular information, for example, selecting the first synchronous channel resource according to the TA value.
  • Step 307 the user equipment uses the first synchronous channel resource to send an access request to the base station.
  • the user equipment may send the access request to the base station when uplink data is sending, and may also send the access request to the base station when triggering access notification sent by the base station is received.
  • power for sending the access request is determined in an open loop power control manner.
  • Step 308 the user equipment begins to time or count when the access request is sent to the base station.
  • Step 309 the base station sends access feedback to the user equipment aiming at the access request sent by the user equipment.
  • the base station may mask the access feedback by using sending time and frequency information of the access request, and the access feedback includes an uplink resource.
  • the user equipment may send an uplink message according to the uplink resource in the access feedback, and the base station may send a competition solution message to the user equipment aiming at the uplink message, which specifically includes:
  • the access feedback may be masked by time and frequency information identifying the sending of the access request.
  • the uplink message includes an identity (Identity, ID) identifying the user equipment, for example, when the uplink message is a radio resource control (Radio Resource Control, RRC) connection establishment request message, the ID of the user equipment contained in the uplink message is an SAE-temporary mobile subscriber identity (SAE-Temporary Mobile Subscriber Identity, S-TMSI); when the user equipment obtains a cell radio network temporary identifier (Cell Radio Network Temporary Identifier, C-RNTI) allocated by the base station, the C-RNTI is contained in the uplink message to serve as the ID of the user equipment.
  • RRC Radio Resource Control
  • S-TMSI SAE-temporary Mobile Subscriber Identity
  • C-RNTI Cell Radio Network Temporary Identifier
  • the user equipment when the access feedback is not received within a preset time, repeatedly implements a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implements a process of using the first synchronous channel resource to send the access request to the base station, until the access feedback is received within the preset time or sending times of the access request reach a preset maximum number.
  • the sending power of the access request may climb according to a particular rule.
  • Step 311 the user equipment begins to time or counter when the uplink message is sent to the base station.
  • Step 312 the base station sends the competition solution message to the user equipment aiming at the uplink message.
  • Step 313 the user equipment determines that access is successful when the competition solution message is obtained and the competition solution message belongs to the user equipment.
  • the competition solution message when the competition solution message includes the ID of the user equipment, the competition solution message belongs to the user equipment.
  • the ID may be S-TMSI and C-RNTI.
  • the user equipment determines that the access is successful when timing or counting is within a preset threshold and the competition solution message sent by the base station aiming at the uplink message is received.
  • the user equipment when the timing or counting reaches the preset threshold and the competition solution message sent by the base station aiming at the uplink message is not received, the user equipment repeatedly implements a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implements a process of using the first synchronous channel resource to send the access request to the base station, until the access is determined to be successful or the sending times of the access request reach the preset maximum number. At this time, the sending power of the access request may climb according to a particular rule.
  • the user equipment when the user equipment obtains the TA value and accesses successfully, the user equipment sets a time alarm of TAT to be infinite.
  • the time alarm of TAT is set to be infinite
  • the user equipment determines it to be permanently synchronous
  • the base station may schedule the uplink and downlink data of the user equipment at any time, and the user equipment may transmit uplink data and/or feedback signaling according to current TA value and a scheduling command, so as not to implement the synchronous process again due to TAT overtime.
  • the user equipment may receive the time alarm of TAT sent by the base station and set the time alarm of TAT according to the time alarm.
  • the user equipment when the user equipment obtains the TA value and accesses successfully, the TAT is operated and the time alarm of TAT is not infinite, the timing of the TAT reaches the time alarm, and the TA value is not obtained again, step 302 or steps 303 to 305 are repeatedly implemented to achieve synchronization.
  • the user equipment may receive the time alarm of TAT sent by the base station and set the time alarm of TAT according to the time alarm.
  • the user equipment when the user equipment implements access, uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 4 is a schematic diagram of a flow of another access method of an embodiment of the present invention.
  • the method shown in Fig. 4 is an access method based on non-competition, including:
  • Step 401 a user equipment receive a synchronous channel resource set sent by a base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the base station may send the synchronous channel resource set to the user equipment according to system load. For example, under a condition of large system load, the number of the synchronous channel resources in the synchronous channel resource set may be decreased; under a condition of small system load, the number of the synchronous channel resources in the synchronous channel resource set may be increased.
  • the base station may dynamically adjust the number of the synchronous channel resources in the synchronous channel resource set according to the system load, and the number of the synchronous channel resources in the synchronous channel resource set may be larger than the number of the random access codes.
  • the present method may reduce conflict and time delay caused by small number of random access codes.
  • the synchronous channel resource includes at least one of the following items: a time domain resource of the synchronous channel, a frequency domain resource of the synchronous channel, and a code resource of the synchronous channel.
  • the base station may send the synchronous channel resource to the user equipment, and may also send index information of at least one synchronous channel resource included in the synchronous channel resource set.
  • the synchronous channel resource may be a scheduling request resource, or other synchronous resources.
  • the user equipment may obtain uplink synchronization by obtaining a TA value under the condition of asynchronous uplink.
  • step 402 or steps 403 to 405 may be implemented.
  • step 402 or steps 403 to 405 may be implemented prior to step 401 and may also be simultaneously implemented with step 401.
  • Step 402 the user equipment may receive the TA value sent by the base station.
  • Step 403 the user equipment obtains a TA rule.
  • the TA rule is used for indicating a threshold of system information and a TA value corresponding to the threshold.
  • the user equipment may obtain the TA rule preset in the user equipment, and may also receive the TA rule sent by the base station.
  • Step 404 the user equipment obtains the system information.
  • the system information includes at least one of the following items: position information of the user equipment, position information of the base station, strength of a signal received by the user equipment, signal quality, path-loss, and downlink signals received by the user equipment from at least two base stations.
  • Step 405 the user equipment determines the TA value according to the TA rule and the system information.
  • the user equipment may obtain position information of the user equipment, and determine the TA value according to the position of the user equipment and a threshold in the TA rule corresponding to the position; the user equipment may obtain strength of a receiving signal, and determine the TA value according to the strength of the receiving signal and a threshold in the TA rule corresponding to the strength of the receiving signal; the user equipment may measure signal quality, and determine the TA value according to the signal quality and a threshold in the TA rule corresponding to the signal quality; the user equipment may measure path-loss to a serving base station, and determine the TA value according to the path-loss and a threshold in the TA rule corresponding to the path-loss; the user equipment may receive position information of at least one base station sent by the serving base station, for example, the position information may be longitude and latitude information, the user equipment calculates distance with the base station according to the position information of the base station and the position information of the user equipment, and determines the TA value in combination with signal propagation speed and a threshold in the position; the
  • At least two base stations are combined to help to optimize or correct the TA value determined by the user equipment, for example, the user equipment measures first downlink path-loss to a first base station and second downlink path-loss to a second base station, wherein the first base station and the second base station are base stations adjacent to the serving base station of the user equipment, and the user equipment determines the TA value according to a threshold in the TA rule corresponding to the first downlink path-loss and the second downlink path-loss.
  • Step 406 a first synchronous channel resource sent by the base station is received.
  • the base station may select the first synchronous channel resource from the synchronous channel resource set, and send the first synchronous channel resource to the user equipment.
  • the base station may also select a new synchronous channel resource not belonging to the synchronous channel resource set to serve as the first synchronous channel resource, and send the first synchronous channel resource to the user equipment, under this condition, step 401 may not be implemented.
  • the base station may randomly select the first synchronous channel resource and may also select the first synchronous channel resource according to particular information, for example, selecting the first synchronous channel resource according to the TA value.
  • the first synchronous channel resource may be at least one of the following items: a time domain resource of the first synchronous channel, a frequency domain resource of the first synchronous channel and a code resource of the first synchronous channel.
  • the base station may send the index information of the first synchronous channel resource to the user equipment.
  • Step 407 the user equipment uses the first synchronous channel resource to send an access request to the base station.
  • power for sending the access request is determined in an open loop power control manner.
  • the base station may send triggering access notification to the user equipment, for enabling the user equipment to use the first synchronous channel resource to send the access request to the base station after obtaining the triggering access notification.
  • Step 408 the base station sends access feedback aiming at the access request to the user equipment.
  • Step 409 the user equipment determines that access is successful when the access feedback is received.
  • the access feedback may be masked by time and frequency information identifying the sending of the access request, and the access feedback includes an uplink resource; the base station may also allocate a wireless side identifier (e.g., C-RNTI) to the user equipment, the access feedback may be masked by the wireless side identifier, and the access feedback includes an uplink data scheduling command masked by the wireless side identifier.
  • a wireless side identifier e.g., C-RNTI
  • the user equipment may begin to time or count when the access request is sent to the base station.
  • timing or counting is within a preset threshold and the user equipment receives the access feedback masked by a sending time and frequency identifier of the access request, or timing or counting is within the preset threshold and the user equipment receives the access feedback masked by the wireless side identifier allocated by the base station to the user equipment, the user equipment determines that the access is successful.
  • the user equipment When the timing or counting is within the preset threshold and the user equipment does not receive the access feedback, the user equipment repeatedly implements a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implements a process of using the first synchronous channel resource to send the access request to the base station, until the access feedback is received within a preset time or sending times of the access request reach a preset maximum number. At this time, the sending power of the access request may climb according to a particular rule.
  • the user equipment may not perform timing or counting after sending the access request to the base station.
  • the user equipment repeatedly implements a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implements a process of using the first synchronous channel resource to send the access request to the base station, until the access feedback is received within the preset time or the sending times of the access request reach the preset maximum number.
  • the sending power of the access request may climb according to a particular rule.
  • the user equipment when the user equipment obtains the TA value and accesses successfully, the user equipment sets a time alarm of TAT to be infinite.
  • the time alarm of TAT is set to be infinite
  • the user equipment determines it to be permanently synchronous
  • the base station may schedule the uplink and downlink data of the user equipment at any time, and the user equipment may transmit uplink data and/or feedback signaling according to current TA value and a scheduling command, so as not to implement the synchronous process again due to TAT overtime.
  • the user equipment may receive the time alarm of TAT sent by the base station and set the time alarm of TAT according to the time alarm.
  • step 402 or steps 403 to 405 are repeatedly implemented to achieve synchronization.
  • the user equipment may receive the time alarm of TAT sent by the base station and set the time alarm of TAT according to the time alarm.
  • the user equipment when the user equipment implements access, uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 5 is a schematic block diagram of a user equipment 500 of an embodiment of the present invention.
  • the user equipment may achieve the above-mentioned method embodiment.
  • the user equipment 500 includes: a control unit 501, a sending unit 502 and a receiving unit 503.
  • the control unit 501 is configured to obtain a first synchronous channel resource.
  • the sending unit 502 is configured to use the first synchronous channel resource to send an access request to a base station.
  • the receiving unit 503 is configured to receive access feedback sent by the base station.
  • the control unit 501 is further configured to determine whether access is successful according to the access feedback.
  • the receiving unit 503 may also receive a synchronous channel resource set sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the control unit 501 may select the first synchronous channel resource from the synchronous channel resource set, and the access under this condition is access based on competition.
  • the receiving unit 503 may also receive the first synchronous channel resource sent by the base station, the first synchronous channel resource may belong to the synchronous channel resource set and may also be a new synchronous channel resource not belonging to the synchronous channel resource set, and the access under this condition is access based on non-competition.
  • the receiving unit 503 is configured to receive the access feedback sent by the base station aiming at the access request, and the control unit 501 is further configured to determine that the access is successful when the receiving unit 503 receives the access feedback.
  • the receiving unit 503 is configured to receive the access feedback sent by the base station aiming at the access request
  • the sending unit 502 is further configured to send an uplink message to the base station aiming at the access feedback
  • the receiving unit 503 is further configured to receive a competition solution message sent by the base station aiming at the uplink message
  • the control unit 501 is further configured to determine that the access is successful when the competition solution message belongs to the competition solution message of the user equipment.
  • the user equipment when the user equipment implements access, the user equipment uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 6 is a schematic block diagram of a user equipment provided by another embodiment of the present invention.
  • the user equipment 600 shown in Fig. 6 is an embodiment of the user equipment 500.
  • the user equipment 600 includes: a receiving unit 601, a control unit 602, a sending unit 603, a timer or counter 604 and a TAT 605.
  • the receiving unit 601 is configured to receive a synchronous channel resource set sent by a base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the synchronous channel resource includes at least one of the following items: a time domain resource of the synchronous channel, a frequency domain resource of the synchronous channel, and a code resource of the synchronous channel.
  • the base station may send the synchronous channel resource to the user equipment, and may also send index information of at least one synchronous channel resource included in the synchronous channel resource set.
  • the synchronous channel resource may be a scheduling request resource, or other synchronous resources.
  • the control unit 602 is configured to obtain a first synchronous channel resource.
  • the first synchronous channel resource may be at least one of the following items: a time domain resource of the first synchronous channel, a frequency domain resource of the first synchronous channel and a code resource of the first synchronous channel.
  • control unit 602 may randomly select the first synchronous channel resource from the synchronous channel resource set received by the receiving unit 601, or select the first synchronous channel resource according to particular information, for example, selecting the first synchronous channel resource according to a TA value, and the access under this condition is access based on competition.
  • the control unit 602 may also obtain the first synchronous channel resource sent by the base station to serve as the first synchronous channel resource, and the access under this condition is access based on non-competition.
  • the base station may randomly select the first synchronous channel resource from the synchronous channel resource set, or select the first synchronous channel resource according to particular information, for example, the first synchronous channel resource is selected according to the TA value, and the first synchronous channel resource is sent to the user equipment, the base station may send the first synchronous channel resource to the user equipment and may also send the index information of the first synchronous channel resource to the user equipment; the base station may also allocate a new synchronous channel resource to the user equipment and send the new synchronous channel resource to the user equipment to serve as the first synchronous channel resource.
  • the first synchronous channel resource may be a scheduling request resource, or other synchronous resources.
  • the sending unit 603 is configured to use the first synchronous channel resource obtained by the control unit 602 to send an access request to the base station.
  • the sending unit 603 may send the access request to the base station when uplink data is sent, and may also send the access request to the base station when the receiving unit 601 receives triggering access notification sent by the base station.
  • the sending unit 603 may send the access request to the base stationwhen the receiving unit 601 receives the triggering access notification sent by the base station.
  • the receiving unit 601 is further configured to receive access feedback sent by the base station aiming at the access request, and the control unit 602 is further configured to determine that access is successful when the receiving unit 601 receives the access feedback; or the receiving unit 601 is further configured to receive the access feedback sent by the base station aiming at the access request, the sending unit 603 is further configured to send an uplink message to the base station according to the access feedback, the receiving unit 601 is further configured to receive a competition solution message sent by the base station aiming at the uplink message, and the control unit 602 is further configured to determine that the access is successful when the competition solution message received by the receiving unit 601 belongs to the competition solution message of the user equipment.
  • the control unit 602 determines that the access is successful when the receiving unit 601 receives the access feedback; for the access method based on competition, the control unit 602 determines that the access is successful when the competition solution message received by the receiving unit 601belongs to the competition solution message of the user equipment.
  • the user equipment 600 may also obtain uplink synchronization by obtaining the TA value before the sending unit 603 sends the access request to the base station.
  • the receiving unit 601 may receive the TA value sent by the base station.
  • control unit 602 is further configured to obtain a TA rule and system information and determine the TA value according to the TA rule and the system information, wherein the TA rule is used for indicating a corresponding relationship of the system information and the TA value, and the system information includes at least one of the following items: position information of the user equipment, position information of the base station, strength of a signal received by the user equipment, signal quality, path-loss, and received downlink signals of at least two base stations.
  • control unit 602 may receive the TA rule sent by the base station through the receiving unit 601, and the control unit 602 may also obtain a preset TA rule from the user equipment 600; the receiving unit 601 receives the system information sent by the base station, and the control unit 602 obtains the system information according to the information sent by the base station and received by the receiving unit 601; and the control unit 602 determines the TA value according to the TA rule and the system information.
  • the user equipment 600 may further include a timer or a counter 605, configured to begin to time or count when the sending unit 603 sends the access request to the base station.
  • the control unit 602 may control to repeatedly implement a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send the access request to the base station, until the timing or counting of the timer or counter 604 is within the preset threshold and the access feedback is received or sending times of the access request reach a preset maximum number.
  • sending power of the access request may climb according to a particular rule.
  • the control unit 602 may determine that the access is successful.
  • the sending unit 603 may send an uplink message to the base station according to an uplink resource in the access feedback.
  • the user equipment 600 may do not include a timer or a counter 605, under this condition, the control unit 602 may control to repeatedly implement a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send the access request to the base station, until the access feedback is received or sending times of the access request reach the preset maximum number. At this time, sending power of the access request may climb according to a particular rule.
  • the user equipment 600 may include a timer or a counter 604, configured to begin to time or count when the sending unit 603 sends the uplink message to the base station.
  • the control unit 602 may determine that the access is successful.
  • the control unit 602 may control to repeatedly implement a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send the access request to the base station, until the access is determined to be successful or sending times of the access request reach a preset maximum number. At this time, sending power of the access request may climb according to a particular rule.
  • the user equipment 600 may further include a TAT 605.
  • the control unit 602 may set a time alarm of the TAT 605 to be infinite.
  • the control unit 602 determines the user equipment 600 to be permanently synchronous.
  • the base station may schedule uplink and downlink data of the user equipment 600 at any time, the user equipment 600 may transmit uplink data and/or feedback signaling according to the current TA value and a scheduling command, so as not to implement a synchronous process again due to TAT overtime.
  • the control unit 602 may also control the user equipment 600 to obtain the TA value again when timing of the TAT 605 reaches a preset time and the receiving unit 601 does not receive the TA value again or the control unit 602 does not determine the TA value again, wherein the receiving unit 601 may receive the time alarm of the TAT sent by the base station.
  • the user equipment when the user equipment implements access, the user equipment uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 7 is a schematic block diagram of a base station 700 of an embodiment of the present invention.
  • the base station may be used for realizing the above-mentioned method embodiment, and the base station 700 includes a receiving unit 701 and a sending unit 702.
  • the receiving unit 701 is configured to receive an access request sent by a user equipment by using a first synchronous channel resource.
  • the sending unit 702 is configured to send access feedback to the user equipment.
  • the sending unit 702 may also send a synchronous channel resource set to the user equipment, before the receiving unit receives the access request sent by the user equipment by using the first synchronous channel resource, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the user equipment may select the first synchronous channel resource from the synchronous channel resource set, and access under this condition is access based on competition.
  • the sending unit 702 may also send the first synchronous channel resource to the user equipment, the first synchronous channel resource may belong to the synchronous channel resource set and may also be a new synchronous channel resource not belonging to the synchronous channel resource set, and access under this condition is access based on non-competition.
  • the sending unit 702 is configured to send the access feedback to the user equipment.
  • the sending unit 702 is configured to send the access feedback to the user equipment
  • the receiving unit 701 is further configured to receive an uplink message sent by the user equipment according to the access feedback
  • the sending unit 702 is further configured to send a competition solution message to the user equipment aiming at the uplink message.
  • the user equipment when the user equipment implements access, uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 8 is a schematic block diagram of a base station provided by another embodiment of the present invention.
  • the base station 800 shown in Fig. 8 is an embodiment of the base station 700.
  • the base station 800 includes a sending unit 801, a receiving unit 802 and a control unit 803.
  • the sending unit 801 is configured to send a synchronous channel resource set to a user equipment, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the synchronous channel resource includes at least one of the following items: a time domain resource of the synchronous channel, a frequency domain resource of the synchronous channel, and a code resource of the synchronous channel.
  • the base station may send the synchronous channel resource to the user equipment, and may also send index information of at least one synchronous channel resource included in the synchronous channel resource set.
  • the synchronous channel resource may be a scheduling request resource, or other synchronous resources.
  • the receiving unit 802 is configured to receive an access request sent by the user equipment by using a first synchronous channel resource.
  • the sending unit 801 is further configured to send access feedback to the user equipment; or the sending unit 801 is further configured to send the access feedback to the user equipment, the receiving unit 802 is further configured to receive an uplink message sent by the user equipment according to the access feedback, and the sending unit 801 is further configured to send a competition solution message to the user equipment aiming at the uplink message.
  • the sending unit 801 may be specifically configured to send the synchronous channel resource set to the user equipment according to system load. For example, under a condition of large system load, the sending unit 801 may decrease the number of the synchronous channel resources in the synchronous channel resource set sent to the user equipment; under a condition of small system load, the sending unit 801 may increase the number of the synchronous channel resources in the synchronous channel resource set sent to the user equipment.
  • the base station 800 may further include the control unit 803, configured to allocate a synchronous channel resource to the user equipment and use the synchronous channel resource as the first synchronous channel resource.
  • the control unit 803 may select the first synchronous channel resource from the synchronous channel resource set and may also allocate a new synchronous channel resource to serve as the first synchronous channel resource.
  • the sending unit 801 is further configured to send the first synchronous channel resource to the user equipment.
  • the first synchronous channel resource may be at least one of a time domain resource of the first synchronous channel, a frequency domain resource of the first synchronous channel and a code resource of the first synchronous channel.
  • the sending unit may also send index information of the first synchronous channel resource to the user equipment.
  • the first synchronous channel resource may be a scheduling request resource, or other synchronous resources.
  • the base station 800 may further include the control unit 803.
  • the control unit 803 may be configured to allocate a wireless side identifier to the user equipment and may also be configured to mask the access feedback by using time and frequency information of the access request received by the receiving unit 802 or mask the access feedback by using the wireless side identifier for example, C-RNTI, allocated by the control unit, for enabling the sending unit 801 to send the access feedback to the user equipment according to the access feedback masked by the control unit 803.
  • the sending unit 801 may also send a TA value to the user equipment.
  • the sending unit may also send a TA rule to the user equipment, for enabling the user equipment to determine the TA value according to the TA rule and system information, and the system information includes at least one of the following items: position information of the user equipment, position information of the base station, strength of a signal received by the user equipment, signal quality, path-loss, and received downlink signals of at least two base stations.
  • the sending unit 801 may also send the system information to the user equipment according to the TA rule.
  • the sending unit may also send a time alarm of a TAT to the user equipment, for enabling the user equipment to set the time alarm of the TAT according to the time alarm.
  • the user equipment when the user equipment implements access, uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 9 is a schematic block diagram of user equipment provided by another embodiment of the present invention, the user equipment may be used for realizing the above-mentioned method embodiment, and the user equipment 900 includes a processor 901, a sender 902 and a receiver 903.
  • the processor 901 is configured to obtain a first synchronous channel resource
  • the receiver 903 is further configured to receive the first synchronous channel resource sent by the base station, wherein the first synchronous channel resource is a synchronous channel resource allocated by the base station to the user equipment, and the processor 901 is specifically configured to determine the first synchronous channel resource received by the receiver 903 as the first synchronous channel resource; or, the receiver 903 is further configured to receive a synchronous channel resource set sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource, and the processor 901 is specifically configured to select the first synchronous channel resource from the synchronous channel resource set received by the receiver 903.
  • the receiver 903 is further configured to receive a synchronous channel resource set sent by the base station, before receiving the first synchronous channel resource sent by the base station, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the processor 901 is further configured to determine that the access is successful.
  • the sender 902 is further configured to send an uplink message to the base station according to the access feedback;
  • the receiver 903 is further configured to receive a competition solution message sent by the base station aiming at the uplink message;
  • the processor 901 is further configured to determine that the access is successful when the competition solution message belongs to the competition solution message of the user equipment.
  • the receiver 903 is further configured to receive triggering access notification sent by the base station; and the sender 902 is further configured to use the first synchronous channel resource to send the access request to the base station, when uplink data is sent or the receiver 903 receives the triggering access notification sent by the base station.
  • the receiver 903 is further configured to receive a timing advance value sent by the base station; or the processor 901 is further configured to obtain a timing advance rule and system information and determine the timing advance value according to the timing advance rule and the system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the processor 901 is further configured to set a time alarm of a timing alignment timer to be infinite.
  • the processor 901 is further configured to begin to time and control to implement a process of receiving or determining the timing advance value again when timing reaches the time alarm and the timing advance value is not received or determined again.
  • the processor 901 is further configured to begin to time or count when the sender 902 sends the access request to the base station.
  • the processor 901 is further configured to control to repeatedly implement a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send the access request to the base station, until the receiver 903 receives the access feedback or sending times of the access request reach a preset maximum number.
  • the processor 901 is further configured to begin to time or count when the sender 902 sends the uplink message to the base station.
  • the processor 901 is further configured to control to repeatedly implement a process of obtaining the first synchronous channel resource and a process of using the first synchronous channel resource to send the access request to the base station, or repeatedly implement a process of using the first synchronous channel resource to send the access request to the base station, until the processor 901 determines that the access is successful or sending times of the access request reach a preset maximum number.
  • the user equipment when the user equipment implements access, the user equipment uses the synchronous channel resource for accessing. In this way, occupation of the user equipment on an access resource during access may be reduced, and utilization efficiency of the access resource is improved.
  • Fig. 10 is a schematic block diagram of a base station provided by another embodiment of the present invention.
  • the base station may be used for achieving the above-mentioned method embodiment, and the base station 1000 includes a receiver 1001, a sender 1002 and a processor 1003.
  • the receiver 1001 is configured to receive an access request sent by a user equipment by using a first synchronous channel resource; the sender 1002 is configured to send access feedback to the user equipment, for enabling the user equipment to determine whether access is successful according to the access feedback.
  • the sender 1002 is further configured to send the first synchronous channel resource to the user equipment, wherein the base station 1000 further includes the processor 1003, configured to allocate a synchronous channel resource to the user equipment to serve as the first synchronous channel resource; or, the sender 1002 is further configured to send a synchronous channel resource set to the user equipment, for enabling the user equipment to select the first synchronous channel resource from the synchronous channel resource set, and use the first synchronous channel resource to send the access request, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sender 1002 is further configured to send a synchronous channel resource set to the user equipment before sending the first synchronous channel resource to the user equipment, wherein the synchronous channel resource set includes at least one synchronous channel resource.
  • the sender 1002 is specifically configured to send the synchronous channel resource set to the user equipment according to system load.
  • the receiver 1001 is further configured to receive an uplink message sent by the user equipment according to the access feedback; the sender 1002 is further configured to send a competition solution message to the user equipment aiming at the uplink message, for enabling the user equipment to determine whether the access is successful according to the competition solution message.
  • the sender 1002 is further configured to send triggering access notification to the user equipment.
  • the sender 1002 is further configured to mask the access feedback by using time and frequency information of the access request sent by the user equipment or mask the access feedback by using a wireless side identifier allocated by the process 1003 to the user equipment.
  • the sender 1002 is further configured to send a timing advance value to the user equipment, for enabling the user equipment to perform uplink transmission according to the timing advance value; or the sender 1002 is further configured to send a timing advance rule to the user equipment, for enabling the user equipment to determine the timing advance value according to the timing advance rule and system information, wherein the timing advance rule is used for indicating a corresponding relationship of the system information and the timing advance value.
  • the sender 1002 is further configured to send a time alarm to the user equipment, for enabling the user equipment to set a time alarm according to the time alarm for timing.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are merely exemplary, e.g., the division of the units is only a logic function division, other division manners may exist in practical implementation, for example, multiple units or components may be combined or integrated to another system, or some features may be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection of devices or units through some interfaces, and may be in electrical, mechanical or other forms.
  • the units described as separate components may be separated physically or not, components displayed as units may be physical units or not, namely, may be located in one place, or may be distributed on multiple network units. A part of or all of the units may be selected to realize the purposes of the technical solutions in the embodiments according to actual demand.
  • the functional units in the embodiments of the present invention may be integrated in a processing unit, or the units may singly exist physically, or two or more units are integrated in one unit.
  • the function is implemented in the form of a software functional unit and is sold or used as an independent product, it may be stored in a computer readable storage medium.
  • the technical solutions of the present invention substantially, or the part contributing to the prior art, or a part of the technical solutions may be implemented in the form of a software product
  • the computer software product is stored in a storage medium, and includes multiple instructions for enabling a computer device (may be a personnel computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods in the embodiments of the present invention.
  • the foregoing storage medium includes a variety of media capable of storing program codes, such as a USB disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, an optical disk or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
EP12883320.9A 2012-08-22 2012-08-22 Procédé d'accès, équipement et système Active EP2876964B1 (fr)

Applications Claiming Priority (1)

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PCT/CN2012/080478 WO2014029092A1 (fr) 2012-08-22 2012-08-22 Procédé d'accès, équipement et station de base

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US11832205B2 (en) 2017-11-21 2023-11-28 Qualcomm Incorporated Open loop uplink timing advance

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CN106686571B (zh) * 2015-11-11 2020-06-16 华为技术有限公司 一种处理发现消息的方法和装置
JP6843228B2 (ja) * 2016-08-10 2021-03-17 インターデイジタル パテント ホールディングス インコーポレイテッド 低減された待ち時間システムにおけるタイミングアドバンスおよび処理能力
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US11832205B2 (en) 2017-11-21 2023-11-28 Qualcomm Incorporated Open loop uplink timing advance

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US20150156750A1 (en) 2015-06-04
US9730189B2 (en) 2017-08-08
CN104322134B (zh) 2020-12-04
EP2876964B1 (fr) 2021-09-29
WO2014029092A1 (fr) 2014-02-27
CN104322134A (zh) 2015-01-28
EP2876964A4 (fr) 2015-07-01

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